CN219151481U

CN219151481U - Constant temperature and constant pressure straightening device for warping of forging

Info

Publication number: CN219151481U
Application number: CN202223392804.XU
Authority: CN
Inventors: 张继松; 詹卫忠; 陈潮; 张威
Original assignee: Jingdezhen Yuanfa Technology Co ltd
Current assignee: Jingdezhen Yuanfa Technology Co ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-06-09
Anticipated expiration: 2032-12-16

Abstract

The utility model relates to the technical field of forging processing and discloses a constant temperature and constant pressure straightening device for warping of a forging, which comprises a lower die holder and an upper die holder, wherein a lower die frame is arranged at the top of the lower die holder, an upper die frame is arranged at the bottom of the upper die holder, electric heating plates are arranged on the inner walls of the bottoms of the lower die frame and the upper die frame, heat insulation layers are arranged on the side surfaces of the lower die frame and the upper die frame, a lower die is arranged in the lower die frame, a lower die cavity is arranged at the top of the lower die frame, an upper die is arranged in the upper die frame, and an upper die cavity is arranged at the bottom of the upper die.

Description

Constant temperature and constant pressure straightening device for warping of forging

Technical Field

The utility model relates to the technical field of forging processing, in particular to a constant temperature and constant pressure straightening device for forging warpage.

Background

In the forging production, during the working procedures of forging forming, cooling, trimming, punching, heat treatment and the like and the transmission process thereof, the forging often generates deformation such as bending, torsion and the like due to uneven cooling, local stress, collision and the like; some forgings, such as slender shaft forgings, forgings with thin flanges, forgings with large drop height and the like, are easier to occur due to the characteristics of the shape of the forgings. If the deformation exceeds the allowable range of the forging technical condition, the forging is scrapped. The correction is to correct the deformation so that the shape and the size of the forging meet the requirements.

The correction is mostly carried out in a correction die, and the correction in the die can also reduce the dimension of the forging in the height direction increased by the undervoltage.

The publication number is: the Chinese patent of CN202779460U discloses a connecting rod forging thermal correction die, which comprises a thermal correction upper die and a thermal correction lower die, wherein left and right support plates are symmetrically and fixedly connected at the left and right ends of the upper end face of the thermal correction lower die through screws, the height of the support plates corresponds to the designed thickness dimension of a forging connecting rod, the support plates play a role of a bearing surface, the flatness of the forging is ensured, and the consistency of the thickness dimension of each forging is effectively ensured.

According to the technical scheme, in the process of carrying out thermal correction on the forge piece, the middle part of the forge piece is in an open state through the support of the support plate, uneven cooling is easily caused between the middle part of the forge piece and the upper surface and the lower surface, uneven stress exists on the pressure of the end part of the forge piece and the pressure of the middle part, after the correction is finished, the internal stress of the forge piece is larger, and repeated warping after the correction is easily caused.

Disclosure of Invention

The utility model aims to provide a constant temperature and constant pressure straightening device for warpage of a forging, which aims to solve the problem that the middle part of the forging provided in the background art is uneven in cooling compared with the upper surface and the lower surface, and uneven stress exists in the pressure of the end part and the pressure of the middle part of the forging.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a constant temperature and constant pressure coalignment of forging warp, includes die holder and upper die base, the die holder top is equipped with the lower mould frame, the upper die base bottom is equipped with the mould frame, lower mould frame and last mould frame bottom inner wall are equipped with the electrical heating board, lower mould frame and last mould frame side inner wall are equipped with thermal-insulated heat preservation, the inside lower mould that is equipped with of lower mould frame, lower die cavity has been seted up at the lower mould top, the inside last mould that is equipped with of last mould frame, go up the mould cavity has been seted up to the mould bottom.

Further, lifting holes are formed in four corners of the lower die and the upper die.

Furthermore, the outer walls of the two sides of the lower die frame are provided with positioning pin sleeves, and the outer walls of the two sides of the upper die frame are provided with positioning pins matched with the positioning pin sleeves.

Further, after the upper die and the lower die are assembled, the contours of the lower die cavity and the upper die cavity are matched with the contours of the outer wall of the forging.

Further, the flange is arranged around the top of the lower die, the top of the lower die is flush with the top of the lower die frame, and a threaded hole connected with the flange of the lower die is formed in the top of the heat insulation layer inside the lower die frame.

Further, the flange is arranged around the bottom of the upper die, the bottom of the upper die is flush with the bottom surface of the upper die frame, and a threaded hole connected with the flange of the upper die is formed in the bottom of the heat insulation layer inside the upper die frame.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, when the constant-temperature and constant-pressure straightening device for the warping of the forging is used, the forging to be straightened is heated and placed into the lower die cavity, the upper die assembly is driven to descend through the press, the positioning pins and the positioning pin sleeves are matched to position and guide the forging, uniform pressure is generated on the forging through the upper die cavity and the lower die cavity, the straightening of the forging is realized, meanwhile, the electric heating plate is used for continuously supplying heat in the straightening process, the plasticity of the forging is improved, the straightening is convenient to smooth, the forging is insulated through the heat insulation layer after the straightening is finished, the internal stress of the forging is reduced, the repeated warping after the straightening is prevented, and the straightening quality of the forging is improved.

Drawings

FIG. 1 is a perspective view of a constant temperature and pressure straightening device for forging warp according to the utility model;

FIG. 2 is a front cross-sectional view of a constant temperature and pressure straightening device for forging warp according to the utility model;

FIG. 3 is a front view of a constant temperature and pressure straightening device for warpage of forgings according to the present utility model;

fig. 4 is a left side view of a constant temperature and pressure straightening device for warpage of forgings.

In the figure: 1-a lower die holder; 2-a lower die frame; 3-positioning pin sleeves; 4-lower die; 5-lower die cavity; 6, lifting holes; 7-an upper die holder; 8-an upper die frame; 9-locating pins; 10-upper die; 11-upper mold cavity; 12-an electric heating plate; 13-a heat insulation layer.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a constant temperature and constant pressure coalignment of forging warp, including die holder 1 and upper die holder 7, there is lower mould frame 2 at die holder 1 top through the screw connection, there is last mould frame 8 at upper die holder 7 bottom through the screw connection, there is electrical heating board 12 lower mould frame 2 and last mould frame 8 bottom inner wall through the screw connection, there is insulating layer 13 lower mould frame 2 and last mould frame 8 side inner wall through the screw connection, there is lower mould 4 lower mould frame 2 inside through the screw connection, lower mould cavity 5 has been seted up at lower mould 4 top, go up mould frame 8 inside and have last mould 10 through the screw connection, go up mould cavity 11 has been seted up to mould 10 bottom. After heating the forge piece to be straightened, placing the forge piece into the lower die cavity 5, driving the upper die assembly to descend through a press, positioning and guiding through the cooperation of the positioning pin 9 and the positioning pin sleeve 3, generating uniform pressure to the forge piece through the upper die cavity 11 and the lower die cavity 5, realizing the straightening of the forge piece, simultaneously continuously supplying heat through the electric heating plate 12 in the straightening process, improving the plasticity of the forge piece, facilitating the smooth straightening, preserving the heat of the forge piece through the heat insulation layer 13 after the straightening is completed, reducing the internal stress of the forge piece, preventing repeated warping after the straightening is completed, and improving the straightening quality of the forge piece.

Lifting holes 6 are formed in four corners of the lower die 4 and the upper die 10, lifting rings are connected through the lifting holes 6, the upper die 10 or the lower die 4 is conveniently taken out, different upper dies 10 and lower dies 4 are conveniently replaced, and the die is suitable for constant temperature and constant pressure straightening of various forgings.

The outer walls of the two sides of the lower die frame 2 are provided with positioning pin sleeves 3, and the outer walls of the two sides of the upper die frame 8 are provided with positioning pins 9 matched with the positioning pin sleeves 3 for positioning and guiding during die assembly.

After the upper die 10 and the lower die 4 are assembled, the contours of the lower die cavity 5 and the upper die cavity 11 are matched with the contours of the outer walls of the forgings, so that the forgings can be pressed uniformly.

The flange is arranged around the top of the lower die 4, the top of the lower die 4 is flush with the top of the lower die frame 2, and a threaded hole connected with the flange of the lower die 4 is formed in the top of the heat insulation layer 13 inside the lower die frame 2, so that the lower die 4 can be conveniently installed and fixed.

The flange is arranged around the bottom of the upper die 10, the bottom of the upper die 10 is flush with the bottom surface of the upper die frame 8, and a threaded hole connected with the flange of the upper die 10 is formed in the bottom of the heat insulation layer 13 inside the upper die frame 8, so that the upper die 10 can be conveniently installed and fixed.

Working principle: when the constant temperature and constant pressure straightening device for the warping of the forging piece is used, the forging piece to be straightened is heated and then placed into the lower die cavity 5, the upper die assembly is driven to descend through a press, the positioning pin 9 and the positioning pin sleeve 3 are matched for positioning and guiding, uniform pressure is generated on the forging piece through the upper die cavity 11 and the lower die cavity 5, the straightening of the forging piece is realized, meanwhile, the electric heating plate 12 is used for continuously supplying heat in the straightening process, the plasticity of the forging piece is improved, the straightening is smooth, the heat insulation layer 13 is used for preserving the heat of the forging piece after the straightening is finished, the internal stress of the forging piece is reduced, the repeated warping after the straightening is prevented, and the straightening quality of the forging piece is improved.

All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Claims

1. The utility model provides a constant temperature constant voltage coalignment of forging warpage, includes die holder (1) and upper die base (7), its characterized in that: the die comprises a die holder (1), and is characterized in that a lower die frame (2) is arranged at the top of the lower die holder (1), an upper die frame (8) is arranged at the bottom of an upper die holder (7), an electric heating plate (12) is arranged on the inner walls of the bottoms of the lower die frame (2) and the upper die frame (8), a heat insulation layer (13) is arranged on the inner walls of the side surfaces of the lower die frame (2) and the upper die frame (8), a lower die (4) is arranged inside the lower die frame (2), a lower die cavity (5) is formed in the top of the lower die (4), an upper die (10) is arranged inside the upper die frame (8), and an upper die cavity (11) is formed in the bottom of the upper die (10).

2. The constant temperature and constant pressure straightening device for forging warp according to claim 1, wherein: lifting holes (6) are formed in four corners of the lower die (4) and the upper die (10).

3. The constant temperature and constant pressure straightening device for forging warp according to claim 1, wherein: the outer walls of the two sides of the lower die frame (2) are provided with positioning pin sleeves (3), and the outer walls of the two sides of the upper die frame (8) are provided with positioning pins (9) matched with the positioning pin sleeves (3).

4. The constant temperature and constant pressure straightening device for forging warp according to claim 1, wherein: after the upper die (10) and the lower die (4) are assembled, the contours of the lower die cavity (5) and the upper die cavity (11) are matched with the contours of the outer walls of the forgings.

5. The constant temperature and constant pressure straightening device for forging warp according to claim 1, wherein: the top of the lower die (4) is provided with a flange at the periphery, the top of the lower die (4) is flush with the top of the lower die frame (2), and a threaded hole connected with the flange of the lower die (4) is formed in the top of the heat insulation layer (13) inside the lower die frame (2).

6. The constant temperature and constant pressure straightening device for forging warp according to claim 1, wherein: the flange is arranged around the bottom of the upper die (10), the bottom of the upper die (10) is flush with the bottom surface of the upper die frame (8), and a threaded hole connected with the flange of the upper die (10) is formed in the bottom of the heat insulation layer (13) inside the upper die frame (8).